1 /*
2 * Hedgewars, a free turn based strategy game
3 * Copyright (C) 2012 Simeon Maxein <smaxein@googlemail.com>
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 */
19
20 #include "logging.h"
21
22 #include <time.h>
23 #include <stdio.h>
24 #include <stdarg.h>
25 #include <stdlib.h>
26
27 static int flib_loglevel = FLIB_LOGLEVEL_INFO;
28 static FILE *flib_logfile = NULL;
29 void (*flib_logCallback)(int level, const char *msg) = NULL;
30
flib_format_ip(uint32_t numip)31 char* flib_format_ip(uint32_t numip) {
32 static char ip[16];
33 snprintf(ip, 16, "%u.%u.%u.%u", (unsigned)(numip>>24), (unsigned)((numip>>16)&0xff), (unsigned)((numip>>8)&0xff), (unsigned)(numip&0xff));
34 return ip;
35 }
36
flib_log_getfile()37 static inline FILE *flib_log_getfile() {
38 if(flib_logfile==NULL) {
39 return stdout;
40 } else {
41 return flib_logfile;
42 }
43 }
44
log_time(char * buffer)45 static int log_time(char *buffer) {
46 time_t timer;
47 struct tm* tm_info;
48
49 time(&timer);
50 tm_info = localtime(&timer);
51
52 return strftime(buffer, 25, "%Y-%m-%d %H:%M:%S", tm_info);
53 }
54
getPrefix(int level)55 static char getPrefix(int level) {
56 switch(level) {
57 case FLIB_LOGLEVEL_ERROR: return 'E';
58 case FLIB_LOGLEVEL_WARNING: return 'W';
59 case FLIB_LOGLEVEL_INFO: return 'I';
60 case FLIB_LOGLEVEL_DEBUG: return 'D';
61 default: return '?';
62 }
63 }
64
_flib_vflog(const char * func,int level,const char * fmt,va_list args)65 static void _flib_vflog(const char *func, int level, const char *fmt, va_list args) {
66 if(level >= flib_loglevel) {
67 char logbuffer[1024];
68 logbuffer[0] = getPrefix(level);
69 logbuffer[1] = ' ';
70
71 int pos = 2;
72
73 int len = log_time(logbuffer+pos);
74 if(len>=0) {
75 pos += len;
76 if(pos>sizeof(logbuffer)-1) pos = sizeof(logbuffer)-1;
77 } else {
78 return;
79 }
80
81 len = snprintf(logbuffer+pos, sizeof(logbuffer)-pos, " [%-30s] ", func);
82 if(len>=0) {
83 pos += len;
84 if(pos>sizeof(logbuffer)-1) pos = sizeof(logbuffer)-1;
85 } else {
86 return;
87 }
88
89 len = vsnprintf(logbuffer+pos, sizeof(logbuffer)-pos, fmt, args);
90 if(len>=0) {
91 pos += len;
92 if(pos>sizeof(logbuffer)-1) pos = sizeof(logbuffer)-1;
93 } else {
94 return;
95 }
96
97 if(flib_logCallback != NULL) {
98 flib_logCallback(level, logbuffer);
99 } else {
100 FILE *logfile = flib_log_getfile();
101 fputs(logbuffer, logfile);
102 fputc('\n', logfile);
103 fflush(logfile);
104 }
105 }
106 }
107
_flib_flog(const char * func,int level,const char * fmt,...)108 void _flib_flog(const char *func, int level, const char *fmt, ...) {
109 va_list argp;
110 va_start(argp, fmt);
111 _flib_vflog(func, level, fmt, argp);
112 va_end(argp);
113 }
114
_flib_fassert(const char * func,int level,bool cond,const char * fmt,...)115 bool _flib_fassert(const char *func, int level, bool cond, const char *fmt, ...) {
116 if(!cond) {
117 va_list argp;
118 va_start(argp, fmt);
119 _flib_vflog(func, level, fmt, argp);
120 va_end(argp);
121 }
122 return !cond;
123 }
124
flib_log_getLevel()125 int flib_log_getLevel() {
126 return flib_loglevel;
127 }
128
flib_log_setLevel(int level)129 void flib_log_setLevel(int level) {
130 flib_loglevel = level;
131 }
132
flib_log_setFile(FILE * file)133 void flib_log_setFile(FILE *file) {
134 flib_logfile = file;
135 flib_logCallback = NULL;
136 }
137
flib_log_isActive(int level)138 bool flib_log_isActive(int level) {
139 return level >= flib_log_getLevel();
140 }
141
flib_log_setCallback(void (* logCallback)(int level,const char * msg))142 void flib_log_setCallback(void (*logCallback)(int level, const char *msg)) {
143 flib_logCallback = logCallback;
144 flib_logfile = NULL;
145 }
146